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(No Model.)

G. 0. GORDON.

' MILLSTONE DRIVER. No. 283,597. Patented Aug. 21, 1 883.

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UNITED STATES PATENT much.

I GEORGE C. GORDON, OF MOUNDSVILLE, WEST VIRGINIA.

MILLSTONE-DRIVER.

SPECIFICATION forming part of Letters Patent No. 283,597, dated August21, 1883,

Application filed Ma 31,1883. (No model.)

- Moundsville, in the county of Marshall and State of West Virginia,have invented certain new and useful Improvements in Millstone- Drivers;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use it, reference being had to theaccompanying drawings, which form part of this specification.

My invention relates to an improvement in millstonedrivers; and itconsists in the combination of the driver and stone with. suitablesprings placed between its ends and the stone,

the spindle which is provided with segments, the driving-pinion providedwith corresponding segments, andsuitable springs which are placedbetween the opposing segments, as will be more fully describedhereinafter.

The object of my invention is to form a spring-connection between thespindle both at the point at which it receives the drivingpower and atthe point at which the drivingpower is transmitted to the stone.

In the accompanying drawings, Figure l is a side elevation of myinvention, the millstone being shown partly in section. Fig. 2 is abottom plan view of the millstone with my improved driver attachedthereto. Fig. 3 is a detail perspective view of the spindle, its

pinion, and the two sets of segments; and Fig.

a is an inverted plan view of the same.

A represents a spindle, which is connected to the driver B, of suitableconstruction, at its top, which driver is located in recesses 0, formedon the under side of the millstone, and has projecting from its ends, onopposite sides, the springs D, which may be coiled or of any otherpreferred construction. These springs preferably rest in recesses formedin the ends of the driver and bear against the inner sides oi therecesses in the stone in which the driver is located, and thus establisha spring-connection between the driver and the stone. By means of thisconstruction the stone isrotated evenly and regularly, bearing upon thelower stone evenly at all points of its face, and thereby producing afine grade of flour and cleaning the bran better than mills of ordinaryconstruction. From the lower end of the spindle A project the segmentalprojections E, from one side of each of which proj cot-ions extends aspring, F, of any suitable construction or material, and which springsare preferably secured in recesses formed in the projections to receivethem. These springs bear against similar segments, G, which depend fromthe lower face of the pinion H, which is loosely mounted upon thespindle.

By means of this construction it will be seen that a spring-connectionis madebetween the spindle and the pinion, which, in connection with thespring-connection that is established between the driver and the stone,as previously described, effectually prevents backlash and insures aneven and regular operation of the stone. I

Any suitable balance-rynd, 0;, may be used in connection with the stoneand spindle.

Having thus described my invention, I claim- The combination of thedriver, the stone, and the springs which are inserted in recesses in theends of the driver and in the stone,with the spindle provided withsuitable segments, the pinion H, provided with corresponding segments,and the springs F, which are placed between the spindle and thedriving-power and between the spindle and the stone, substantially asshown and described.

In testimony whereof I afliX my signature in presence of two witnesses.

GEORGE G. GORDON. W'itnesses:

O. O. MATHEWS, E. H. ORIswELL.

